Can You Tile Over Existing Tiles? Everything You Need to Know
Removing old tiles can be messy, time-consuming and frustrating.
So it’s hardly surprising that one of the most common questions asked before starting a renovation project is:
Can you simply tile over existing tiles?
The short answer is yes — sometimes.
However, there are several important factors to consider before reaching for the tile adhesive.
Is Tiling Over Existing Tiles Possible?
In certain circumstances, new tiles can be installed directly over existing tiles.
The most important factor is the condition of the original tiled surface.
Your existing tiles should be:
- Securely fixed
- Relatively flat
- Free from significant damage
- Clean
- Suitable for supporting the additional weight
If your existing tiles are loose, cracked or poorly installed, covering them with another layer of tiles is unlikely to solve the problem.
Check the Existing Tiles
Carefully inspect the entire tiled area.
Look for cracked, loose or damaged tiles.
Gently tapping across the tiled surface can sometimes help identify areas that sound hollow and may not be properly bonded to the surface underneath.
Any concerns should be assessed before installation begins.
Consider the Additional Weight
Adding another layer of tiles will increase the weight placed on the wall or floor.
This is particularly important when tiling walls.
The substrate must be capable of safely supporting the combined weight of the existing tiles, adhesive and new tiles.
If you are unsure, seek professional advice before starting the project.
Check Doors, Fixtures and Fittings
Adding new tiles over existing ones will increase the overall height or thickness of the finished surface.
On floors, this could affect:
- Doors
- Thresholds
- Kitchen units
- Appliances
- Skirting boards
On walls, it could affect sockets, switches, taps and other fixtures.
Consider these factors before deciding whether tiling over tiles is the best option.
Prepare the Surface Properly
Good preparation is essential.
The existing tiled surface should be thoroughly cleaned to remove dirt, grease and other contaminants.
Depending on the products being used, additional preparation or specialist primers may be required.
Always follow the instructions provided by the adhesive and installation product manufacturers.
Use the Correct Adhesive
Choosing an appropriate tile adhesive is essential.
The correct product will depend on the existing surface, new tiles, installation location and other project requirements.
If you’re unsure, ask an experienced installer or suitable product specialist.
Should You Remove the Old Tiles Instead?
Sometimes, yes.
Removing the existing tiles may be the better choice if they are damaged, loose, uneven or unsuitable for supporting the new installation.
Although removing tiles can create additional work initially, starting with a properly prepared surface can help achieve a better long-term result.
The Verdict
Yes, it is sometimes possible to tile over existing tiles.
However, every project is different.
The condition of the existing surface, additional weight, finished height and installation products all need to be considered.
When in doubt, seek professional advice before installation begins.